FLAMEBAR FIRE-RATED DUCT SYSTEMS FOR ENGINEERS
SIMPLIFY HVAC DESIGNS WITH A FLAMEBAR FIRE-RATED DUCT SYSTEM
Flamebar systems offer design flexibility and owner benefits across a wide range of fire-rated enclosure applications, including horizontal and vertical ventilation, A2L refrigerant lines, fuel lines, fan enclosures, generator room exhaust, and grease duct. Flamebar is tested and listed at 2,000 °F for up to 4 hours.
HORIZONTAL FIRE-RATED HVAC SYSTEMS
Horizontal Flamebar systems offer a low profile and compliance throughout the entire system, including fan and VFD enclosures. This is an advantage over fire-rated duct wrap, which offers no compliant solution for designs that require larger sizes and fan enclosures, and drywall enclosures which are typically not compliant for horizontal applications.
VERTICAL SHAFT ASSEMBLIES
Flamebar Compact Shaft systems simplify and accelerate the construction schedule by eliminating early drywall mobilization, reducing schedule conflict between trades and sharply reducing the number of inspections. Traditional shaft systems often require multiple inspections to ensure compliance with building codes. Flamebar systems benefit owners by reducing shaft footprint, thus increasing Gross Leasable Area (GLA).
FLAMEBAR A2L REFRIGERANT ENCLOSURES
The 2021 International Mechanical Code (IMC) and ANSI/ASHRAE 15 2022 Standard require that flammable A2L refrigerant piping systems penetrating two or more floors must be protected with fire-rated enclosures that also contain refrigerant leaks. For buildings with four stories or more, two-hour rated and vented assemblies are required. Two- and three-story buildings require 1 hour protection. Flamebar A2L systems offer code-compliant solutions for mechanically or naturally ventilated systems and do not require a vapor barrier. Flamebar systems are compact, occupying less depth and width for any configuration of two or more pipes. Easily opened ‘clamshell’ enclosures and built-in access doors ensure serviceability access.
ENGINEERS DELIVER TOTAL INSTALLATION COST SAVINGS WITH FLAMEBAR
By eliminating the need for early drywall mobilization, the Flamebar system allows shaft installation to progress without the usual delays associated with traditional multi-trade methods. Fewer required inspections further accelerate the construction process, as fewer interruptions are needed for compliance checks. A satisfied general contractor reported saving 10 schedule days on a 20-story project. This efficiency speeds up the construction timeline and reduces the administrative burden on project managers and inspectors.
For many shaft configurations, the installed cost of Flamebar systems is 20-40% less than competitive code-compliant systems. This significant cost reduction is achieved through more efficient installation processes, reduced labor requirements, lower material costs, and fewer necessary components.
WHY LEADING ENGINEERING FIRMS SPECIFY FLAMEBAR
Throughout the United States, leading engineering firms trust Flamebar as their preferred fire-rated duct system.
FLAMEBAR SOLVES HVAC DESIGN CHALLENGES
Flamebar offers design flexibility locating dampers, assuring optimal service accessibility. The Flamebar A2L system requires less space, contains leaks, and can often be located within walls. Horizontal offsets are simple to install, eliminating difficult-to-construct drywall assemblies.
THE COMPACT SIZE OF FLAMEBAR SAVES SPACE
The compact Flamebar shaft solution is increasingly requested by owners and developers who value space savings. Reduced shaft cross section yields an increase in Gross Leasable Area ranging from 20-40% while reducing volume of construction materials and waste.
FLAMEBAR IS CODE-COMPLIANT
Horizontal systems must be tested and listed for purpose, which includes both fire inside and fire outside conditions.
Top: Duct B – for ventilation duct assemblies where the duct contains an opening within the fire environment.
Bottom: Duct A – for ventilation duct assembly that passes through the fire environment without openings.
SUPPORT FOR ENGINEERS
Flamebar systems allow for easier modifications and adjustments during the construction process. This flexibility ensures that any changes to the project scope or design can be accommodated with minimal disruption. Conquest’s experienced team regularly works with engineers to specify a system that fits HVAC project requirements.
